JPS61183613U

JPS61183613U -

Info

Publication number: JPS61183613U
Application number: JP6799285U
Authority: JP
Priority date: 1985-05-07
Filing date: 1985-05-07
Publication date: 1986-11-15

Description

[Brief explanation of the drawing]

第１図は本考案を示す一部欠截した縦断面図で
ある。第２図は従来のものを示す図である。１……弁箱、２……シリンダー、３……圧油通
路、４……圧油導入室、５……弁座、６……圧油
導入孔、７……高圧側フランジ、８……油圧ポン
プ、９……管路、１０……給入弁、１１……弁押
さえ棒、１２……ハンドル、１３……弁開閉室、
１４……タンク側フフランジ、１５……管路、１
６……油タンク、１７……弁滑動室、１８……排
出弁、１９……ピストン、２０……弁頭、２１…
…キヤツプ、２２……芯軸、２３……弁開放バネ
、２４……制御弁、２５……逆止弁、２６……パ
イロツト管路、２７……パイロツト往復管路、２
８……パイロツト戻り管路、２９……ラム。 FIG. 1 is a partially cutaway vertical sectional view showing the present invention. FIG. 2 is a diagram showing a conventional one. 1...Valve box, 2...Cylinder, 3...Pressure oil passage, 4...Pressure oil introduction chamber, 5...Valve seat, 6...Pressure oil introduction hole, 7...High pressure side flange, 8... Hydraulic pump, 9... Pipeline, 10... Supply valve, 11... Valve holding rod, 12... Handle, 13... Valve opening/closing chamber,
14...Tank side flange, 15...Pipeline, 1
6... Oil tank, 17... Valve sliding chamber, 18... Discharge valve, 19... Piston, 20... Valve head, 21...
... Cap, 22 ... Core shaft, 23 ... Valve opening spring, 24 ... Control valve, 25 ... Check valve, 26 ... Pilot pipe line, 27 ... Pilot reciprocating pipe line, 2
8... Pilot return line, 29... Ram.

Claims

[Scope of utility model registration request]

A valve opening/closing chamber 13 is provided at the center position inside the valve box 1,
With the valve opening/closing chamber 13 in the center, a pressure oil introduction chamber 4 is provided at the left position, and a valve sliding chamber 17 having a larger diameter than the pressure oil introduction chamber 4 is provided at the right position, in communication with each other, and the pressure oil introduction chamber 4 has a pressure oil introduction hole 6 communicating with the hydraulic pump 8, and an oil tank 16 is provided on the bottom side of the valve opening/closing chamber 13.
Tank-side flanges 14 are provided in communication with each other, and a valve seat 5 is provided on the end face of the pressure oil introduction chamber 4 on the side communicating with the valve opening/closing chamber 13, and within the valve sliding chamber 17,
The valve head 20 on the left end side of the discharge valve 18, which has an H-shaped vertical cross section and has a piston 19 sliding in the horizontal direction formed on the right side, is pressed against the valve seat 5 by the pilot hydraulic pressure supplied to the outer surface of the piston 19, and the high pressure side hydraulic pressure is applied. A switching valve for a forming press characterized by closing a passage.